PDT006A0X3-SRZ LINEAGEPOWER | Alldatasheet
Document overview
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Technical content
Features
Compliant to RoHS EU Directive 2002/95/EC (Z versions) Compatible in a Pb-free or SnPb reflow environment (Z versions) DOSA based Wide Input voltage range (3Vdc-14.4Vdc) Output voltage programmable from 0.6Vdc to 5.5Vdc via external resistor. Digitally adjustable down to 0.45Vdc Digital interface through the PMBusTM # protocol Tunable LoopTM to op timize dynamic output voltage response Flexible output voltage sequencing EZ- SEQUENCE Power Good signal Fixed switching frequency with capability of external synchronization Output overcurrent protection (non-latching) Overtemperature protection Remote On/Off Ability to sink and source current Cost efficient open frame design Small size: 12.2 mm x 12.2 mm x 7.25 mm (0.48 in x 0.48 in x 0.29 in) Wide operating temperature range [-40°C to 85°C] UL* 60950-1Recognized, CSA† C22.2 No. 60950-1-03 Certified, and VDE‡ 0805:2001-12 (EN60950-1) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities
Applications
Distributed power architectures Intermediate bus voltage applications Telecommunications equipment Servers and storage applications Networking equipment Industrial equipment
Description
The 6A Digital Pico DLynx TM p o w e r m o d u l e s a r e n o n - i s o l a t e d d c - d c c o n v e r t e r s t h a t d e l i v e r u p t o 6 A o f o u t p u t current. These modules operate over a wide range of input voltage (V IN = 3Vdc-14.4Vdc) and provide a precisely regulated output voltage from 0.45Vdc to 5.5Vdc, programmable via an external resistor and further adjustable through PMBus. Features include a digital interface using the PMBus protocol, remote On/Off, adjustable output voltage, over current and overtemperature protection. The PMBus interface supports a range of commands to control and monitor the module. The Tunable Loop TM f e a t u r e a l l o w s t h e u s e r t o o p t i m i z e t h e d y n a m i c r e s p o n s e o f t h e converter to match the load with reduced amount of output capacitance leading to savings on cost and PWB area. TRIM VOUT VS+ GND RTUNE CTUNE RTrim VIN CoCin Vout+Vin+ ON/OFF SEQ MODULE PGOOD SMBALRT# SIG_GND ADDR1 RADDR0 CLK DATA ADDR0 VS- RADDR1 GND SYNC RoHS Compliant
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. Parameter Device Symbol Min Max Unit Input Voltage All V IN -0.3 15 V Continuous SEQ, SYNC, VS+ All 7 V CLK, DATA, SMBALERT All 3.6 V Operating Ambient Temperature All T A -40 85 °C (see Thermal Considerations section) Storage Temperature All T stg -55 125 °C Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All V IN 3 14.4 Vdc Maximum Input Current All I IN,max 5 A d c (VIN=3V to 14V, IO=IO, max ) Input No Load Current (VIN = 12Vdc, IO = 0, module enabled) VO,set = 0.6 Vdc I IN,No load 3 0 m A VO,set = 5Vdc I IN,No load 9 0 m A Input Stand-by Current (VIN = 12Vdc, module disabled) All I IN,stand-by 6 m A Inrush Transient All I t 1 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1ȝH source impedance; VIN =0 to 14V, IO= IOmax ; See Test Configurations) All 11.2 mAp-p Input Ripple Rejection (120Hz) All -55 dB
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 3 Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point (with 0.1% tolerance for external resistor used to set output voltage) All V O, set -1.0 +1.0 % V O, set Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) All V O, set -3.0 +3.0 % V O, set Adjustment Range (selected by an external resistor) (Some output voltages may not be possible depending on the input voltage – see Feature Descriptions Section) All V O 0.6 5.5 Vdc PMBus Adjustable Output Voltage Range All V O,adj -25 0 +25 %V O,set PMBus Output Voltage Adjustment Step Size All 0.4 %V O,set Remote Sense Range All 0.5 Vdc Output Regulation (for VO 2.5Vdc) Line (VIN=VIN, min to VIN, max) All +0.4 % V O, set Load (IO=IO, min to IO, max) All 10 mV Output Regulation (for VO < 2.5Vdc) Line (VIN=VIN, min to VIN, max) All 5 mV Load (IO=IO, min to IO, max) All 10 mV Temperature (Tref=TA, min to TA, max) All 0.4 % V O, set Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Co = 0.1ȝF // 22 ȝF ceramic capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) All 50 100 mV pk-pk RMS (5Hz to 20MHz bandwidth) All 20 38 mV rms External Capacitance Without the Tunable Loop TM ESR 1 mȍ All C O, max 22 47 ȝF With the Tunable Loop TM ESR 0.15 mȍ A l l C O, max 22 1000 ȝF ESR 10 mȍ A l l C O, max 22 3000 ȝF Output Current (in either sink or source mode) All I o 0 6 Adc Output Current Limit Inception (Hiccup Mode) (current limit does not operate in sink mode) All I O, lim 2 0 0 % I o,max Output Short-Circuit Current All I O, s/c 3 6 7 m A r m s (VO250mV) ( Hiccup Mode ) Efficiency V O,set = 0.6Vdc Ș 7 5 . 6 % VIN= 12Vdc, TA=25°C V O, set = 1.2Vdc Ș 8 5 . 0 % IO=IO, max , VO= VO,set V O,set = 1.8Vdc Ș 8 8 . 6 % V O,set = 2.5Vdc Ș 9 0 . 6 % V O,set = 3.3Vdc Ș 9 2 . 1 % V O,set = 5.0Vdc Ș 9 3 . 8 % Switching Frequency All f sw 600 kHz External capacitors may require using the new Tunable Loop TM feature to ensure that the module is stable as well as getting the best transient response. See the Tunable Loop TM section for details.
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 4 Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Frequency Synchronization All Synchronization Frequency Range All 510 720 kHz High-Level Input Voltage All V IH 2.0 V Low-Level Input Voltage All V IL 0 . 4 V Input Current, SYNC All I SYNC 1 0 0 n A Minimum Pulse Width, SYNC All t SYNC 100 ns Maximum SYNC rise time All t SYNC_SH 100 ns General Specifications Parameter Device Min Typ Max Unit Calculated MTBF (IO=0.8IO, max, TA=40°C) Telecordia Issue 2 Method 1 Case 3 All 18,595,797 Hours Weight TBD g (oz.) Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, Signal referenced to GND) Device code with suffix “4” – Positive Logic (See Ordering Information) Logic High (Module ON) Input High Current All I IH 1 mA Input High Voltage All V IH 2 VIN,max V Logic Low (Module OFF) Input Low Current All I IL 1 mA Input Low Voltage All V IL -0.2 0.6 V Device Code with no suffix – Negative Logic (See Ordering Information) (On/OFF pin is open collector/drain logic input with external pull-up resistor; signal referenced to GND) Logic High (Module OFF) Input High Current All I IH ʊ ʊ 1 m A Input High Voltage All V IH 2 . 0 ʊ V IN, max V d c Logic Low (Module ON) Input low Current All I IL ʊ ʊ 1 0 ȝA Input Low Voltage All V IL - 0 . 2 ʊ 0 . 6 V d c
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 5 Feature Specifications (cont.) Parameter Device Symbol Min Typ Max Units Turn-On Delay and Rise Times (VIN=VIN, nom, IO=IO, max , VO to within ±1% of steady state) Case 1: On/Off input is enabled and then input power is applied (delay from instant at which VIN = VIN, min until Vo = 10% of Vo, set) All Tdelay ʊ 0 . 4 ʊ m s e c Case 2: Input power is applied for at least one second and then the On/Off input is enabled (delay from instant at which Von/Off is enabled until Vo = 10% of Vo, set) All Tdelay ʊ 0 . 8 ʊ m s e c Output voltage Rise time (time for Vo to rise from 10% of Vo, set to 90% of Vo, set) All Trise ʊ 2 . 2 ʊ m s e c Output voltage overshoot (TA = 25 o C VIN= VIN, min to VIN, max,IO = IO, min to IO, max) With or without maximum external capacitance 3 . 0 % V O, set Over Temperature Protection (See Thermal Considerations section) All T ref TBD °C PMBus Over Temperature Warning Threshold All T WARN 1 3 0 ° C Tracking Accuracy (Power-Up: 2V/ms) All V SEQ –Vo 1 0 0 m V (Power-Down: 2V/ms) All V SEQ –Vo 1 0 0 m V (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) Input Undervoltage Lockout Turn-on Threshold All 2 . 7 9 V d c Turn-off Threshold All 2 . 5 8 V d c Hysteresis All 0 . 2 V d c PMBus Adjustable Input Under Voltage Lockout Thresholds All 2.5 14 Vdc Resolution of Adjustable Input Under Voltage Threshold All 5 0 0 m V PGOOD (Power Good) Signal Interface Open Drain, Vsupply ≤ 5VDC Overvoltage threshold for PGOOD ON All 1 0 8 % V O, set Overvoltage threshold for PGOOD OFF All 1 0 5 % V O, set Undervoltage threshold for PGOOD ON All 1 1 0 % V O, set Undervoltage threshold for PGOOD OFF All 9 0 % V O, set Pulldown resistance of PGOOD pin All 5 0 Ω Sink current capability into PGOOD pin All 5 m A
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 6 Digital Interface Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Conditions Symbol Min Typ Max Unit PMBus Signal Interface Characteristics Input High Voltage (CLK, DATA) V IH 2 . 1 3 . 6 V Input Low Voltage (CLK, DATA) V IL 0 . 8 V Input high level current (CLK, DATA) I IH - 1 0 1 0 ʅA Input low level current (CLK, DATA) I IL - 1 0 1 0 ʅA Output Low Voltage (CLK, DATA, SMBALERT#) I OUT=2mA V OL 0 . 4 V Output high level open drain leakage current (DATA, SMBALERT#) VOUT=3.6V I OH 0 10 ʅA Pin capacitance C O 0 . 7 p F PMBus Operating frequency range Slave Mode F PMB 1 0 4 0 0 k H z Data hold time Receive Mode Transmit Mode tHD:DAT 0 300 n s Data setup time t SU:DAT 250 ns Measurement System Characteristics Read delay time tDLY 1 5 3 1 9 2 2 3 1 ȝs Output current measurement range IRNG 0 18 A Output current measurement resolution IRES 62.5 mA Output current measurement gain accuracy IACC ± 5 % Output current measurement offset IOFST 0 . 1 A VOUT measurement range VOUT(rng) 0 5.5 V VOUT measurement resolution VOUT(res) 1 6 . 2 5 m V VOUT measurement gain accuracy VOUT(gain) -2 2 LSB VOUT measurement offset VOUT(ofst) -3 3 LSB VIN measurement range VIN(rng) 0 14.4 V VIN measurement resolution VIN(res) 3 2 . 5 m V VIN measurement gain accuracy VIN(gain) -2 2 LSB VIN measurement offset VIN(ofst) -5.5 1.4 LSB
Figure 41. Output Voltage vs. Input Voltage Set Point can be set for different input voltages. Figure 42. Circuit configuration for programming output voltage using an external resistor. Vo is the desired output voltage.
0.6 Open
Please see the Digital Feature Descriptions section. GND pins of the module should not exceed 0.5V. the circuit configuration for output voltage margining. Figure 43. Circuit Configuration for margining Please see the Digital Feature Descriptions section.
types of output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. voltage down to the reference voltage of the module. across the lower resistor R1. before the sequencing signal is allowed to ramp up. Figure 44. Circuit showing connection of the sequencing signal to the SEQ pin. follows the sequencing voltage on a one-to-one basis. output voltages reach ground potential. Please see the Digital Feature Descriptions section. wait to cool before attempting to restart. Please see the Digital Feature Descriptions section. Please see the Digital Feature Descriptions section. undervoltage lockout turn-on threshold. Please see the Digital Feature Descriptions section. Please see the Digital Feature Descriptions section.
Table 2. General recommended values of of RTUNE Table 3. Recommended values of RTUNE and CTUNE to 330 ȝF/12 m ESR polymer capacitors.
must support the Packet Error Checking (PEC) scheme. Figure 48. Circuit showing connection of resistors used to set the PMBus address of the module.
and ON bits to determine startup.
0 Module ignores the ON bit in the
1 Module responds to the ON bit in the
1 Module requires the analog ON/OFF pin
Table 5. Note that the exponent is fixed at -4 (decimal) VOUT_SCALE_LOOP command is 0.2%. output voltage of the module.
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 1 using the “Linear” mode with the exponent fixed at –10 (decimal). The value of the offset voltage is given by )( 2_ −×= TRIMVOUTV offsetOUT This offset voltage is added to the voltage set through the divider ratio and nominal VREF to produce the trimmed output voltage. The valid range in two’s complement for this command is –4000h to 3999h. The high order two bits of the high byte must both be either 0 or 1. If a value outside of the +/-25% adjustment range is given with this command, the module will set it’s output voltage to the nominal value (as if VOUT_TRIM had been set to 0), assert SMBALRT#, set the CML bit in STATUS_BYTE and the invalid data bit in STATUS_CML. Output Voltage Margining Using the PMBus The module can also have its output voltage margined via PMBus commands. The command VOUT_MARGIN_HIGH sets the margin high voltage, while the command VOUT_MARGIN_LOW sets the margin low voltage. Both the VOUT_MARGIN_HIGH and VOUT_MARGIN_LOW commands use the “Linear” mode with the exponent fixed at –10 (decimal). Two bytes are used for the mantissa with the upper bit [7] of the high byte fixed at 0. The actual margined output voltage is a combination of the VOUT_MARGIN_HIGH or VOUT_MARGIN_LOW and the VOUT_TRIM values as shown below. TRIMVOUTHIGHMARGINVOUT V MHOUT TRIMVOUTLOWMARGINVOUT V MLOUT Note that the sum of the margin and trim voltages cannot be outside the ±25% window around the nominal output voltage. The data associated with VOUT_MARGIN_HIGH and VOUT_MARGIN_LOW can be stored to non-volatile memory using the STORE_DEFAULT_ALL command. The module is commanded to go to the margined high or low voltages using the OPERATION command. Bits [5:2] are used to enable margining as follows: 0 0 X X : M a r g i n O f f 0101 : Margin Low (Ignore Fault) 0 1 1 0 : M a r g i n L o w ( A c t o n F a u l t ) 1 0 0 1 : M a r g i n H i g h ( I g n o r e F a u l t ) 1 0 1 0 : M a r g i n H i g h ( A c t o n F a u l t ) PMBus Adjustable Overcurrent Warning The module can provide an overcurrent warning via the PMBus. The threshold for the overcurrent warning can be set using the parameter IOUT_OC_WARN_LIMIT. This command uses the “Linear” data format with a two byte data word where the upper five bits [7:3] of the high byte represent the exponent and the remaining three bits of the high byte [2:0] and the eight bits in the low byte represent the mantissa. The exponent is fixed at – 1 (decimal). The upper six bits of the mantissa are fixed at 0 while the lower five bits are programmable with a default value of TBD (decimal). The resolution of this warning limit is 500mA. The value of the IOUT_OC_WARN_LIMIT can be stored to non-volatile memory using the STORE_DEFAULT_ALL command. Temperature Status via PMBus The module can provide information related to temperature of the module through the STATUS_TEMPERATURE command. The command returns information about whether the pre-set over temperature fault threshold and/or the warning threshold have been exceeded. PMBus Adjustable Output Over and Under Voltage Protection The module has output over and under voltage protection capability. The PMBus command VOUT_OV_FAULT_LIMIT is used to set the output over voltage threshold from four possible values: 108%, 110%, 112% or 115% of the commanded output voltage. The command VOUT_UV_FAULT_LIMIT sets the threshold that causes an output under voltage fault and can also be selected from four possible values: 92%, 90%, 88% or 85%. The default values are 112% and 88% of commanded output voltage. Both commands use two data bytes formatted as two’s complement binary integers. The “Linear” mode is used with the exponent fixed to –10 (decimal) and the effective over or under voltage trip points given by: )_( )_( 2)___( 2)___( LIMITFAULTUVVOUTV LIMITFAULTOVVOUTV REQUVOUT REQOVOUT Values within the supported range for over and undervoltage detection thresholds will be set to the nearest fixed percentage. Note that the correct value for VOUT_SCALE_LOOP must be set in the module for the correct over or under voltage trip points to be calculated. In addition to adjustable output voltage protection, the 6A Digital Pico DLynxTM module can also be programmed for the response to the fault. The VOUT_OV_FAULT RESPONSE and VOUT_UV_FAULT_RESPONSE commands specify the response to the fault. Both these commands use a single data byte with the possible options as shown below. 1. Continue operation without interruption (Bits 2. Continue for four switching cycles and then shut down if the fault is still present, followed by no restart or continuous restart (Bits [7:6] = 01, Bits [5:3] = 000 means no restart, Bits [5:3] = 111 means continuous restart) 3. Immediate shut down followed by no restart or continuous restart (Bits [7:6] = 10, Bits [5:3] = 000 means no restart, Bits [5:3] = 111 means continuous restart). 4. Module output is disabled when the fault is present and the output is enabled when the
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 2 fault no longer exists (Bits [7:6] = 11, Bits [5:3] = xxx). Note that separate response choices are possible for output over voltage or under voltage faults. PMBus Adjustable Input Undervoltage Lockout The module allows adjustment of the input under voltage lockout and hysteresis. The command VIN_ON allows setting the input voltage turn on threshold, while the VIN_OFF command sets the input voltage turn off threshold. For the VIN_ON command, possible values are 2.75V, and 3V to 14V in 0.5V steps. For the VIN_OFF command, possible values are 2.5V to 14V in 0.5V steps. If other values are entered for either command, they will be mapped to the closest of the allowed values. Both the VIN_ON and VIN_OFF commands use the “Linear” format with two data bytes. The upper five bits represent the exponent (fixed at -2) and the remaining 11 bits represent the mantissa. For the mantissa, the four most significant bits are fixed at 0. Power Good The module provides a Power Good (PGOOD) signal that is implemented with an open-drain output to indicate that the output voltage is within the regulation limits of the power module. The PGOOD signal will be de- asserted to a low state if any condition such as overtemperature, overcurrent or loss of regulation occurs that would result in the output voltage going outside the specified thresholds. The PGOOD thresholds are user selectable via the PMBus (the default values are as shown in the Feature Specifications Section). Each threshold is set up symmetrically above and below the nominal value. The POWER_GOOD_ON command sets the output voltage level above which PGOOD is asserted (lower threshold). For example, with a 1.2V nominal output voltage, the POWER_GOOD_ON threshold can set the lower threshold to 1.14 or 1.1V. Doing this will automatically set the upper thresholds to 1.26 or 1.3V. The POWER_GOOD_OFF command sets the level below which the PGOOD command is de-asserted. This command also sets two thresholds symmetrically placed around the nominal output voltage. Normally, the POWER_GOOD_ON threshold is set higher than the POWER_GOOD_OFF threshold. Both POWER_GOOD_ON and POWER_GOOD_OFF commands use the “Linear” format with the exponent fixed at –10 (decimal). The two thresholds are given by )_( )_( 2)__( 2)__( OFFGOODPOWERV ONGOODPOWERV OFFPGOODOUT ONPGOODOUT Both commands use two data bytes with bit [7] of the high byte fixed at 0, while the remaining bits are r/w and used to set the mantissa using two’s complement representation. Both commands also use the VOUT_SCALE_LOOP parameter so it must be set correctly. The default value of POWER_GOOD_ON is set at 1.1035V and that of the POWER_GOOD_OFF is set at 1.08V. The values associated with these commands can be stored in non-volatile memory using the STORE_DEFAULT_ALL command. The PGOOD terminal can be connected through a pullup resistor (suggested value 100KΩ) to a source of 5VDC or lower. Measurement of Output Current, Output Voltage and Input Voltage The module is capable of measuring key module parameters such as output current and voltage and input voltage and providing this information through the PMBus interface. Roughly every 200ȝs, the module makes 16 measurements each of output current, voltage and input voltage. Average values of of these 16 measurements are then calculated and placed in the appropriate registers. The values in the registers can then be read using the PMBus interface. Measuring Output Current Using the PMBus The module measures current by using the inductor winding resistance as a current sense element. The inductor winding resistance is then the current gain factor used to scale the measured voltage into a current reading. This gain factor is the argument of the IOUT_CAL_GAIN command, and consists of two bytes in the linear data format. The exponent uses the upper five bits [7:3] of the high data byte in two-s complement format and is fixed at –15 (decimal). The remaining 11 bits in two’s complement binary format represent the mantissa. During manufacture, each module is calibrated by measuring and storing the current gain factor into non-volatile storage. The current measurement accuracy is also improved by each module being calibrated during manufacture with the offset in the current reading. The IOUT_CAL_OFFSET command is used to store and read the current offset. The argument for this command consists of two bytes composed of a 5-bit exponent (fixed at -4d) and a 11-bit mantissa. This command has a resolution of 62.5mA and a range of -4000mA to +3937.5mA. The READ_IOUT command provides module average output current information. This command only supports positive or current sourced from the module. If the converter is sinking current a reading of 0 is provided. The READ_IOUT command returns two bytes of data in the linear data format. The exponent uses the upper five bits [7:3] of the high data byte in two-s complement format and is fixed at –4 (decimal). The remaining 11 bits in two’s complement binary format represent the mantissa with the 11th bit fixed at 0 since only positive numbers are considered valid. Note that the current reading provided by the module is not corrected for temperature. The temperature corrected current reading for module temperature TModule can be estimated using the following equation
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 3 where IOUT_CORR is the temperature corrected value of the current measurement, IREAD_OUT is the module current measurement value, TIND is the temperature of the inductor winding on the module. Since it may be difficult to measure TIND, it may be approximated by an estimate of the module temperature. Measuring Output Voltage Using the PMBus The module can provide output voltage information using the READ_VOUT command. The command returns two bytes of data all representing the mantissa while the exponent is fixed at -10 (decimal). During manufacture of the module, offset and gain correction values are written into the non-volatile memory of the module. The command VOUT_CAL_OFFSET can be used to read and/or write the offset (two bytes consisting of a 16-bit mantissa in two’s complement format) while the exponent is always fixed at -10 (decimal). The allowed range for this offset correction is -125 to 124mV. The command VOUT_CAL_GAIN can be used to read and/or write the gain correction - two bytes consisting of a five-bit exponent (fixed at -8) and a 11-bit mantissa. The range of this correction factor is -0.125V to +0.121V, with a resolution of 0.004V. The corrected output voltage reading is then given by: OFFSETCALVOUT GAINCALVOUTInitialV FinalV OUT OUT )]__1()([ Measuring Input Voltage Using the PMBus The module can provide output voltage information using the READ_VIN command. The command returns two bytes of data in the linear format. The upper five bits [7:3] of the high data form the two’s complement representation of the mantissa which is fixed at –5 (decimal). The remaining 11 bits are used for two’s complement representation of the mantissa, with the 11th bit fixed at zero since only positive numbers are valid. During module manufacture, offset and gain correction values are written into the non-volatile memory of the module. The command VIN_CAL_OFFSET can be used to read and/or write the offset - two bytes consisting of a five-bit exponent (fixed at -5) and a11-bit mantissa in two’s complement format. The allowed range for this offset correction is -2 to 1.968V, and the resolution is 32mV. The command VIN_CAL_GAIN can be used to read and/or write the gain correction - two bytes consisting of a five-bit exponent (fixed at -8) and a 11-bit mantissa. The range of this correction factor is -0.125V to +0.121V, with a resolution of 0.004V. The corrected output voltage reading is then given by: OFFSETCALVIN GAINCALVINInitialV FinalV IN IN )]__1()([ Reading the Status of the Module using the PMBus The module supports a number of status information commands implemented in PMBus. However, not all features are supported in these commands. A 1 in the bit position indicates the fault that is flagged. STATUS_BYTE : Returns one byte of information with a summary of the most critical device faults. Bit Position Flag Default Value
7 X 0
6 OFF 0
5 VOUT Overvoltage 0
4 IOUT Overcurrent 0
3 VIN Undervoltage 0
2 Temperature 0
1 CML (Comm. Memory Fault) 0
0 None of the above 0
STATUS_WORD : Returns two bytes of information with a summary of the module’s fault/warning conditions. Low Byte Bit Position Flag Default Value 1 CML (Comm. Memory Fault) 0
7 VOUT fault or warning 0
6 IOUT fault or warning 0
5 X 0
4 X 0
3 POWER_GOOD# (is negated) 0
2 X 0
1 X 0
0 X 0
STATUS_VOUT : Returns one byte of information relating to the status of the module’s output voltage related faults. Bit Position Flag Default Value
7 VOUT OV Fault 0
6 X 0
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 4
4 VOUT UV Fault 0
3 X 0
STATUS_IOUT : Returns one byte of information relating to the status of the module’s output voltage related faults. Bit Position Flag Default Value
7 IOUT OC Fault 0
5 IOUT OC Warning 0
STATUS_TEMPERATURE : Returns one byte of information relating to the status of the module’s temperature related faults. Bit Position Flag Default Value
7 OT Fault 0
6 OT Warning 0
STATUS_CML : Returns one byte of information relating to the status of the module’s communication related faults. Bit Position Flag Default Value
7 Invalid/Unsupported Command 0
6 Invalid/Unsupported Command 0
5 Packet Error Check Failed 0
1 Other Communication Fault 0
MFR_VIN_MIN : Returns minimum input voltage as two data bytes of information in Linear format (upper five bits are exponent – fixed at -2, and lower 11 bits are mantissa in two’s complement format – fixed at 12) MFR_VOUT_MIN : Returns minimum output voltage as two data bytes of information in Linear format (upper five bits are exponent – fixed at -10, and lower 11 bits are mantissa in two’s complement format – fixed at 614) MFR_SPECIFIC_00 : Returns information related to the type of module and revision number. Bits [7:2] in the Low Byte indicate the module type (000110 corresponds to the PDT006 series of module), while bits [7:3] indicate the revision number of the module. Low Byte Bit Position Flag Default Value 7:2 Module Name 000110 1:0 Reserved 10 High Byte Bit Position Flag Default Value 7:3 Module Revision Number None 2:0 Reserved 000
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 5 Summary of Supported PMBus Commands Please refer to the PMBus 1.1 specification for more details of these commands. Table 6 Hex Code Command Brief Description Non-Volatile Memory Storage
01 OPERATION
Turn Module on or off. Also used to margin the output voltage Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r/w r r/w r/w r/w r/w r r Function On X Margin X X Default Value 0 0 0 0 0 0 X X
02 ON_OFF_CONFIG
Configures the ON/OFF functionality as a combination of analog ON/OFF pin and PMBus commands Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r/w r/w r/w r/w r Function X X X pu cmd pol cpa X Default Value 0 0 0 1 0 1 1 1 YES
03 CLEAR_FAULTS Clear any fault bits that may have been set, also releases the SMBALERT#
signal if the device has been asserting it.
10 WRITE_PROTECT
Used to control writing to the module via PMBus. Copies the current register setting in the module whose command code matches the value in the data byte into non-volatile memory (EEPROM) on the module Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w x x x x x Function bit7 bit6 bit5 X X X X X Default Value 0 0 0 X X X X X Bit5: 0 – Enables all writes as permitted in bit6 or bit7 1 – Disables all writes except the WRITE_PROTECT, OPERATION and ON_OFF_CONFIG (bit 6 and bit7 must be 0) Bit 6: 0 – Enables all writes as permitted in bit5 or bit7 1 – Disables all writes except for the WRITE_PROTECT and OPERATION commands (bit5 and bit7 must be 0) Bit7: 0 – Enables all writes as permitted in bit5 or bit6 1 – Disables all writes except for the WRITE_PROTECT command (bit5 and bit6 must be 0) YES
11 STORE_DEFAULT_ALL Copies all current register settings in the module into non-volatile memory
(EEPROM) on the module. Takes about 50ms for the command to execute.
12 RESTORE_DEFAULT_ALL Restores all current register settings in the module from values in the
module non-volatile memory (EEPROM)
13 STORE_DEFAULT_CODE
Copies the current register setting in the module whose command code matches the value in the data byte into non-volatile memory (EEPROM) on the module Bit Position 7 6 5 4 3 2 1 0 Access w w w w w w w w Function Command code
14 RESTORE_DEFAULT_CODE
Restores the current register setting in the module whose command code matches the value in the data byte from the value in the module non-volatile memory (EEPROM) Bit Position 7 6 5 4 3 2 1 0 Access w w w w w w w w Function Command code
20 VOUT_MODE
The module has MODE set to Linear and Exponent set to -10. These values cannot be changed Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Mode Exponent Default Value 0 0 0 1 0 1 1 0
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 6 Table 6 (continued) Hex Code Command Brief Description Non-Volatile Memory Storage
22 VOUT_TRIM
Apply a fixed offset voltage to the output voltage command value Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function High Byte Default Value 0 0 0 0 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Low Byte Default Value 0 0 0 0 0 0 0 0 YES
25 VOUT_MARGIN_HIGH
Sets the target voltage for margining the output high Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r/w r/w r/w r/w r/w r/w r/w Function High Byte Default Value 0 0 0 0 0 1 0 1 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Low Byte Default Value 0 1 0 0 0 1 1 1 YES
26 VOUT_MARGIN_LOW
Sets the target voltage for margining the output low Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r/w r/w r/w r/w r/w r/w r/w Function High Byte Default Value 0 0 0 0 0 1 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Low Byte Default Value 0 1 0 1 0 0 0 1 YES
29 VOUT_SCALE_LOOP
Sets the scaling of the output voltage – equal to the feedback resistor divider ratio Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r/w r/w Function Exponent Mantissa Default Value 1 0 1 1 1 0 0 1 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Mantissa Default Value 0 0 0 0 0 0 0 0 YES
35 VIN_ON
Sets the value of input voltage at which the module turns on Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Exponent Mantissa Default Value 1 1 1 1 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r/w r/w r/w r/w r/w r/w r/w Function Mantissa Default Value 0 0 0 0 1 0 1 1 YES
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 7 Table 6 (continued) Hex Code Command Brief Description Non-Volatile Memory Storage
36 VIN_OFF
Sets the value of input voltage at which the module turns off Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Exponent Mantissa Default Value 1 1 1 1 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r/w r/w r/w r/w r/w r/w r/w Function Mantissa Default Value 0 0 0 0 1 0 1 0 YES
38 IOUT_CAL_GAIN
Returns the value of the gain correction term used to correct the measured output current Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r/w Function Exponent Mantissa Default Value 1 0 0 0 1 0 0 V Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Mantissa Default Value V: Variable based on factory calibration YES
39 IOUT_CAL_OFFSET
Returns the value of the offset correction term used to correct the measured output current Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r/w r r Function Exponent Mantissa Default Value 1 1 1 0 0 V 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r/w r/w r/w Function Mantissa Default Value 0 0 V: Variable based on factory calibration YES
40 VOUT_OV_FAULT_LIMIT
Sets the voltage level for an output overvoltage fault Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r/w r/w r/w r/w r/w r/w r/w Function High Byte Default Value 0 0 0 0 0 1 0 1 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Low Byte Default Value 0 0 0 0 1 0 1 0 YES
41 VOUT_OV_FAULT_RESPONSE
Instructs the module on what action to take in response to a output overvoltage fault Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r r r Function RSP [1] RSP [0] RS[2] RS[1] RS[0] X X X Default Value 1 1 1 1 1 1 0 0 YES
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 8 Table 6 (continued) Hex Code Command Brief Description Non-Volatile Memory Storage
44 VOUT_UV_FAULT_LIMIT
Sets the voltage level for an output undervoltage fault Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r/w r/w r/w r/w r/w r/w r/w Function High Byte Default Value 0 0 0 0 0 1 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Low Byte Default Value 1 0 0 0 1 1 1 1 YES
45 VOUT_UV_FAULT_RESPONSE
Instructs the module on what action to take in response to a output undervoltage fault Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r r r Function RSP [1] RSP [0] RS[2] RS[1] RS[0] X X X Default Value 0 0 0 0 0 1 0 0 YES 4A IOUT_OC_WARN_LIMIT Sets the output overcurrent warning level in A Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Exponent Mantissa Default Value 1 1 1 1 1 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r/w r/w r/w Function Mantissa Default Value 0 0 tbd tbd tbd tbd tbd tbd YES 5E POWER_GOOD_ON Sets the output voltage level at which the PGOOD pin is asserted high Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r/w r/w r/w r/w r/w r/w r/w Function High Byte Default Value 0 0 0 0 0 1 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Low Byte Default Value 0 1 1 0 1 0 1 0 YES 5F POWER_GOOD_OFF Sets the output voltage level at which the PGOOD pin is de-asserted low Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r/w r/w r/w r/w r/w r/w r/w Function High Byte Default Value 0 0 0 0 0 1 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Low Byte Default Value 0 1 0 1 0 0 1 0 YES
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 2 9 Table 6 (continued) Hex Code Command Brief Description Non-Volatile Memory Storage
61 TON_RISE
Sets the rise time of the output voltage during startup Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r/w Function Exponent Mantissa Default Value 1 1 1 0 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Mantissa Default Value 0 0 1 0 1 0 1 0 YES
78 STATUS_BYTE
Returns one byte of information with a summary of the most critical module faults Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Flag X OFF VOUT _OV IOUT _OC VIN_ UV TEMP CML OTHE R Default Value 0 0 0 0 0 0 0 0
79 STATUS_WORD
Returns two bytes of information with a summary of the module’s fault/warning conditions Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Flag VOUT IOUT _OC X X PGO OD X X X Default Value 0 0 0 0 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Flag X OFF VOUT _OV IOUT _OC VIN_ UV TEMP CML OTHE R Default Value 0 0 0 0 0 0 0 0 7A STATUS_VOUT Returns one byte of information with the status of the module’s output voltage related faults Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Flag VOUT_OV X X VOUT_UV X X X X Default Value 0 0 0 0 0 0 0 0 7B STATUS_IOUT Returns one byte of information with the status of the module’s output current related faults Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Flag IOUT_OC X X X IOUT_OC_WARN X X X Default Value 0 0 0 0 0 0 0 0 7D STATUS_TEMPERATURE Returns one byte of information with the status of the module’s temperature related faults Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Flag OT_FAULT OT_WARN X X X X X X Default Value 0 0 0 0 0 0 0 0
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 3 0 Table 6 (continued) Hex Code Command Brief Description Non-Volatile Memory Storage 7E STATUS_CML Returns one byte of information with the status of the module’s communication related faults Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Flag Invalid Command Invalid Data PEC Fail X X X Other Comm Fault X Default Value 0 0 0 0 0 0 0 0
88 READ_VIN
Returns the value of the input voltage applied to the module Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Exponent Mantissa Default Value 1 1 0 1 1 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Mantissa Default Value 0 0 0 0 0 0 0 0 8B READ_VOUT Returns the value of the output voltage of the module Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Mantissa Default Value 0 0 0 0 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Mantissa Default Value 0 0 0 0 0 0 0 0 8C READ_IOUT Returns the value of the output current of the module Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Exponent Mantissa Default Value 1 1 1 0 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Mantissa Default Value 0 0 0 0 0 0 0 0
98 PMBUS_REVISION
Returns one byte indicating the module is compliant to PMBus Spec. 1.1 (read only) Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Default Value 0 0 0 1 0 0 0 1 YES A0 MFR_VIN_MIN Returns the minimum input voltage the module is specified to operate at (read only) Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Exponent Mantissa Default Value 1 1 1 1 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Mantissa Default Value 0 0 0 0 1 1 0 0 YES
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 3 1 Table 6 (continued) Hex Code Command Brief Description Non-Volatile Memory Storage A4 MFR_VOUT_MIN Returns the minimum output voltage possible from the module (read only) Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Exponent Mantissa Default Value 0 0 0 0 0 0 1 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Mantissa Default Value 0 1 1 0 0 1 1 0 YES D0 MFR_SPECIFIC_00 Returns module name information (read only) Format Unsigned Binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Reserved Default Value 1 1 1 0 1 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Module Name Reserved Default Value 0 0 0 1 1 0 1 0 YES D4 VOUT_CAL_OFFSET Applies an offset to the READ_VOUT command results to calibrate out offset errors in module measurements of the output voltage (between -125mV and +124mV) Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r/w r r r r r r r Function Mantissa Default Value V 0 0 0 0 0 0 0 Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Mantissa Default Value V V V V V V V V YES D5 VOUT_CAL_GAIN Applies a gain correction to the READ_VOUT command results to calibrate out gain errors in module measurements of the output voltage (between -0.125 and 0.121) Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r/w Function Exponent Mantissa Default Value 1 1 0 0 0 0 0 V Bit Position 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r/w r/w r/w Function Mantissa Default Value V V V V V V V V YES D6 VIN_CAL_OFFSET Applies an offset correction to the READ_VIN command results to calibrate out offset errors in module measurements of the input voltage (between -2V and +1.968V) Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r/w r r r/w Function Exponent Mantissa Default Value 1 1 0 1 V 0 0 V Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r/w r/w r/w Function Mantissa Default Value 0 0 V V V V V V YES
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 3 2 Hex Code Command Brief Description Non-Volatile Memory Storage D7 VIN_CAL_GAIN Applies a gain correction to the READ_VIN command results to calibrate out gain errors in module measurements of the input voltage (between -0.125 and 0.121) Format Linear, two’s complement binary Bit Position 7 6 5 4 3 2 1 0 Access r r r r r/w r r r/w Function Exponent Mantissa Default Value 1 1 0 0 V 0 0 V Bit Position 7 6 5 4 3 2 1 0 Access r r r r/w r/w r/w r/w r/w Function Mantissa Default Value 0 0 0 V V V V V YES
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 3 4 Example Application Circuit Requirements: Vin: 12V Vout: 1.8V Iout: 4.5A max., worst case load transient is from 3A to 4.5A ∆Vout: 1.5% of Vout (27mV) for worst case load transient Vin, ripple 1.5% of Vin (180mV, p-p) CI1 Decoupling cap - 1x0.01 µF/16V ceramic capacitor (e.g. Murata LLL185R71E103MA01) CI2 1x22 µF/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20) CI3 47 µF/16V bulk electrolytic CO1 Decoupling cap - 1x0.01 µF/16V ceramic capacitor (e.g. Murata LLL185R71E103MA01) CO2 1 x 47 µF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19) CO3 1 x 330 µF/6.3V Polymer (e.g. Sanyo Poscap) CTune 2200pF ceramic capacitor (can be 1206, 0805 or 0603 size) RTune 178 ohms SMT resistor (can be 1206, 0805 or 0603 size) RTrim 10k Ω SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%) RADDR0 DATA SEQ VS- RADDR1 GND Vin+ CI3 CO3 ADDR0 VOUT VS+ GND TRIM CTUNE RTUNE RTrim VIN CO1 CI1 Vout+ ON/OFF SEQ SMBALRT# MODULE PGOOD ADDR1 SIG_GND SYNC CI2 CO2
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current Mechanical Outline Dimensions are in millimeters and (inches). PIN FUNCTION PIN FUNCTION
1 ON/OFF 10 PGOOD
2 VIN 11 SYNC1
3 GND 12 VS-
4 VOUT 13 SIG. GND
5 VS+ (SENSE) 14 SMBALERT
6 TRIM 15 DATA
7 GND 16 ADDR0
8 CLK 17 ADDR1
9 SEQ
1 If unused, connect to Ground.
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 36 Recommended Pad Layout Dimensions are in millimeters and (inches).
2 If unused, connect to Ground
2 VIN 11 SYNC 2
4 VOUT 13 SIG_GND
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 37 Packaging Details The 12V Digital Pico DLynxTM 6A modules are supplied in tape & reel as standard. Modules are shipped in quantities of 200 modules per reel. All Dimensions are in millimeters and (in inches). Reel Dimensions: Outside Dimensions: 330.2 mm (13.00) Inside Dimensions: 177.8 mm (7.00”) Tape Width: 24.00 mm (0.945”)
number and the location of manufacture. speed should be considered to optimize this process. during the second reflow process. suggested Pb-free solder paste is Sn/Ag/Cu (SAC). pad where the output pin is in the ground plane. Maximum peak temperature is 260 C. Minimum temperature is 235 C. Figure 51. Recommended linear reflow profile Cleaning Application Note (AN04-001).
October 17, 2011 6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current LINEAGE POWER 3 9 Document No: DS11-008 ver. 0.33 PDF name: PDT006A0X.pdf
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table 7. Device Codes Table 8. Coding Scheme
601 Shiloh Road, Plano, TX 75074, USA
application. No rights under any patent accompany the sale of any such product(s) or information. Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents. © 2011 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved.